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Cruise Control Test Procedures For DL SW/Sdn/3 Door

The required components are:

* SOA386C401 Cruise Control Module Tester Box
* SOA386C400 Test Harness


CAUTION: DO NOT START ENGINE WITH THE TESTER INSTALLED


1. Start car and run engine for at least one minute to build up vacuum. Shut engine off.

2. Remove driver side under-dash panels. Loosen attaching screws for Electronic Module and remove Module. Re-fasten screw containing ground wire firmly to ensure ground. Disconnect cruise wiring harness from Electronic Module. Attach Module Tester to cruise harness and Electronic Module.

FIGURE 1:




3. Control switch operation may be checked with key and Cruise in the Off position. Operating control switch in its respective positions, Resume
- Set - Off, should cause the corresponding light on the Module tester to illuminate with switch function. If not, check 15 amp fuse in position #3 of the fuse box, which is the stop light fuse. See FIGURE 1.
4. Turn key to ON position. TACH and IGNITION lights should be on. If not, check 15 amp cruise fuse in position 21 in fuse box. See FIGURE
1. Also check power lead to cruise (green wire/red tracer with blue connectors) to confirm connection. For automatic transmission equipped vehicles, NEUTRAL light will be on in neutral and park. Module tester will not operate for automatic's in neutral or park. Place car in Drive when using Module Tester and NEUTRAL light should go out.

Place manual transmission vehicles in neutral. SPEED light may be on or off depending on the speed sensor's reed switch contacts. Roll car several feet and SPEED light should blink on and off. If not, check the cruise harness connection to the speed sensor, continuity through the speed sensor (roll car several feet) and the ground wire. If it checks good, the sensor in the speedometer is defective and should be replaced according to applicable Service Manual instruction.
5. Turn cruise on by pushing the "ON" button. - RESUME will flash momentarily with switch function. SAFETY, TACH, IGNITION, VAC, VENT should now be on. If ignition light is on and Vac or vent light is off, this indicates either a bad valve body, wiring short to ground, or poor connection between valve and module. Use buttons on Module Tester to test the valves according to Step 13.

6. Depress brake pedal - BRAKE/CLUTCH light will come on. SAFETY will go out. BRAKE/CLUTCH light should come on before SAFETY goes out.

If not, adjust switch(s) to achieve correct operation. Vac and Vent light will go out with brake pedal application also.

7. Momentarily press Set/Coast button and release - Safety and Vent should go out. Accelerator pedal should go toward floor. Vent may flicker. Lights On - TACK, IGNITION, VAC. If lights respond as indicated but the pedal does not move, the Module is good and the remainder of the system is at fault. Perform Reservoir and Servo test as described in Step 14. If the lights and the pedal do not respond as indicated, the Module may be faulty. Perform further tests as described in Steps 8, 12, 13 and 14 before condemning Module.



8. Depress brake pedal in automatic transmission vehicles and accelerator pedal should return. Depress brake or clutch pedal in manual transmission vehicles and accelerator pedal should return. When depressing brake pedal, lights will function as described in Step 6. Vent and Safety lights should come on when depressing clutch pedal. Lights on now - SAFETY, TACK, IGNITION, VAC., VENT. If not, recheck switch adjustments and switch continuity.

The Fuji installed Stop Lamp Switch (OEM) is open with one side of the switch hot all the time. Depressing the brake pedal will close the switch and voltage should be present at both terminals. Switch shown with brake pedal at rest.



The brake Safety Switch is closed with both sides of the switch hot all the time. To check the switch separately, ground one end of test light and probe at one side of switch. The light will go out when the brake pedal is depressed. Be sure that the key and cruise are still on. Switch shown with brake pedal at rest.



The clutch Safety Switch is closed with the clutch pedal at rest. To check the switch separately, apply 12 volts to one side of switch and connect test light to other side and to ground. Test light should be lit until clutch pedal is depressed, then the light should go out. Switch shown with clutch pedal at rest.

9. Now push the Resume/Accel button and hold while accelerator pedal goes toward floor. Release button when accelerator pedal has hit floor or stopped moving toward floor. Resume should flash with switch action. Safety and Vent lights will go out. Vent may flicker. Lights on now
- TACK, IGNITION, VAC.

10. Now press and hold Set/Coast button. Set and Vent should come on with button function. Lights on - TACK, SET, IGNITION, VAC, VENT. Accelerator pedal should return to idle position.

11. Release button when accelerator pedal returns to idle position and pedal may go toward floor again, depending on vacuum supply remaining. Safety and Vent lights should go out. Vent may flicker. Lights on - TACH, IGNITION, VAC.

12. Disconnect tester - Start engine to build vacuum, shut engine off, reconnect Tester and repeat test as necessary to confirm proper operation. Let engine run long enough to build adequate vacuum supply.

13. In the event that the unit does not pass any of the above tests, the three buttons on the Module Tester may be used to isolate valve body, vacuum hose, and servo problems.

a. Repeat Step 12 to build vacuum supply if necessary. CAUTION: Be sure engine is off before continuing.
b. Depress Safety, Vent, and Vacuum buttons in that order and hold down. Accelerator pedal should go to floor.
c. Release the Vacuum button and accelerator pedal should remain on floor.
d. Release the Vent button and the accelerator pedal should return.
e. Repeat the test but release the Safety button to return the accelerator pedal.
f. Depressing any one of the buttons should produce a corresponding click from the valves under the hood if the valve is functioning and the unit is wired correctly. If the valve body will not pass above tests, check wiring continuity and if okay, replace valve body.
14. The Reservoir and Servo and apply hose may also be tested with a hand vacuum pump to isolate component part problems. Connect pump to Servo apply hose and pump vacuum. Servo should pull accelerator pedal to floor and keep it there until vacuum is released. Vacuum reservoir can also be checked by pumping down and seeing if vacuum holds.